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Noctua NF-A8 PWM vs Thermalright Peerless Assassin 120 SE CPU Air Cooler

Updated August 2026The Noctua NF-A8 PWM is ideal for compact builds needing quiet operation, while the Thermalright Peerless Assassin 120 SE excels in performance for high-end CPUs. Choose based on your specific cooling needs.

The Noctua NF-A8 PWM is ideal for compact builds needing quiet operation, while the Thermalright Peerless Assassin 120 SE excels in performance for high-end CPUs. Choose based on your specific cooling needs.

Why Noctua NF-A8 PWM is better

price

Noctua is cheaper at £24.59

noise

Noctua has a lower max noise level of 17.7 dB(A)

size

Noctua is more compact at 80x80x25 mm

Why Thermalright Peerless Assassin 120 SE CPU Air Cooler is better

performance

Thermalright has higher airflow at 66.17 CFM

cooling

Thermalright supports high-performance CPUs with double tower design

compatibility

Thermalright supports more CPU sockets including AM5 and LGA 1700

Overall score

Noctua NF-A8 PWM
75
Thermalright Peerless Assassin 120 SE CPU Air Cooler
85

Specifications

SpecNoctua NF-A8 PWMThermalright Peerless Assassin 120 SE CPU Air Cooler
Max RPM22001550
Max Noise17.7 dB(A)25.6 dB(A)
Airflow40 CFM66.17 CFM
Weight0.1 kg0.97 kg
Socket SupportLimitedIntel & AMD

Dimension comparison

Noctua NF-A8 PWMThermalright Peerless Assassin 120 SE CPU Air Cooler

Overview of Noctua NF-A8 PWM and Thermalright Peerless Assassin 120 SE CPU Air Cooler

The Noctua NF-A8 PWM and the Thermalright Peerless Assassin 120 SE CPU Air Cooler serve distinct purposes within the realm of cooling solutions. The Noctua NF-A8 PWM, priced at £24.59, is designed primarily as a compact fan suitable for smaller cases, while the Thermalright Peerless Assassin 120 SE, retailing at £26.90, is a robust CPU cooler aimed at delivering superior thermal performance for demanding systems. Each product brings unique features tailored to different user needs.

Design and Build Quality

The design philosophy of the Noctua NF-A8 PWM centres around compactness and efficiency. Its dimensions of 80x80x25 mm make it ideal for small form factor builds, such as HTPCs and ITX systems. The fan boasts a premium build quality with a maximum speed of 2200 RPM and an impressively low noise level of 17.7 dB(A). In contrast, the Thermalright Peerless Assassin 120 SE features a larger footprint, measuring 125x135x155 mm, and incorporates a double tower cooling design. This allows it to support a more robust cooling capacity, although at the cost of a heavier weight of 0.97 kg. The choice here largely depends on the available space and cooling requirements of the user's setup.

Performance Metrics

Performance is a critical aspect when comparing these two products. The Noctua NF-A8 PWM operates with a maximum RPM of 2200, delivering a quiet yet effective airflow suitable for smaller systems. It is particularly tailored to maintain low noise levels while providing adequate cooling. On the other hand, the Thermalright Peerless Assassin 120 SE, with a maximum fan speed of 1550 RPM, achieves an airflow rate of 66.17 CFM, which is significantly higher than the Noctua fan. This superior airflow is attributed to its double PWM fans, making it a more suitable choice for high-performance CPUs that generate substantial heat.

Noise Levels

Noise output is a key consideration for many PC builders. The Noctua NF-A8 PWM excels in this area, with a maximum noise level of just 17.7 dB(A), making it one of the quietest options available on the market. This is particularly important for users looking to build a silent PC. The Thermalright Peerless Assassin 120 SE, however, has a higher maximum noise level of 25.6 dB(A). While still relatively quiet, it may not appeal to those who prioritise silent operation above all else. Therefore, users needing a tranquil environment should lean towards the Noctua NF-A8 PWM.

Installation and Compatibility

Installation ease and compatibility can significantly affect user experience. The Noctua NF-A8 PWM includes various mounting options, including anti-vibration mounts and an extension cable, ensuring a straightforward installation process. It is designed to fit well within compact cases. Conversely, the Thermalright Peerless Assassin 120 SE is compatible with a wider range of CPU sockets, including Intel LGA 1700 and AMD AM5, with appropriate mounting plates provided. Its double tower design may require more space and careful installation but can accommodate higher-powered CPUs effectively.

Target Audience

The intended audience for each cooler varies considerably. The Noctua NF-A8 PWM is aimed at users with compact builds who need a reliable and quiet cooling solution without taking up too much space. It is perfect for NAS devices and smaller systems. In contrast, the Thermalright Peerless Assassin 120 SE is designed for gamers or professionals who require enhanced cooling performance for high-end CPUs. Its larger size and advanced cooling capabilities make it more suited for tower cases where space is less of a constraint.

Pricing Comparison

When it comes to pricing, the Noctua NF-A8 PWM is more affordable at £24.59, making it an attractive option for those on a budget or those who only need a single fan for moderate cooling needs. The Thermalright Peerless Assassin 120 SE, priced at £26.90, provides more extensive cooling capabilities that justify the slightly higher cost for users needing robust performance. This price difference may influence buyers depending on their specific cooling requirements and budget constraints.

Which should you buy?

Choosing between the Noctua NF-A8 PWM and the Thermalright Peerless Assassin 120 SE ultimately depends on your specific needs. If you are building a compact PC and require a silent, reliable fan, the Noctua NF-A8 PWM is the clear winner. However, if you are looking for a powerful air cooler designed for high-performance CPUs and have the space to accommodate it, the Thermalright Peerless Assassin 120 SE is the better option. Both products offer unique advantages, making them excellent choices within their respective categories.

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Noctua NF-A8 PWM vs Thermalright Peerless Assassin 120 SE CPU Air Cooler | versusfinder